Wisman MRL100kV/200W High-Voltage DC Power Supply Module

Overview

The Wisman MRL100kV/200W is a high-stability, low-noise, DC-DC high-voltage power supply module engineered for precision applications requiring tightly regulated unipolar or bipolar HV outputs up to ±100 kV. Based on zero-current resonant converter topology and proprietary high-voltage insulation design, the MRL series delivers exceptional long-term stability and electromagnetic compatibility—critical for sensitive instrumentation environments such as mass spectrometry, electron optics, and dielectric withstand testing. Its modular architecture supports seamless integration into OEM systems, with rigorous attention to thermal management, shielding integrity, and signal fidelity. Unlike general-purpose HV supplies, the MRL series is specifically qualified for continuous-duty operation under laboratory and industrial conditions where reproducibility, safety interlocking, and traceable control are mandatory—not optional.

Key Features

• Output range: 0–100 kV DC, selectable positive or negative polarity; multiple standard voltage variants available (1–80 kV, in 1–10 kV increments)
• Rated output power: 200 W (with scalable models from 75 W to 200 W)
• Ultra-low output ripple: ≤0.1% peak-to-peak relative to full-scale output voltage—measurable under resistive load at rated power
• Short-term stability: ≤25 ppm/h after 30-minute warm-up; long-term stability: ≤0.02% over 8-hour period (at constant ambient and load)
• Temperature coefficient: ≤25 ppm/°C across full operating range (0–50 °C)
• Comprehensive protection suite: programmable overvoltage lockout (OVP), overcurrent limit (OCP), arc detection with automatic recovery, and hardware-enforced safety interlock circuitry
• Multi-mode control: local adjustment via multi-turn potentiometer; remote analog control (0–10 V for voltage/current setpoint); digital interface options include USB 2.0, RS-232, and RS-422 with ASCII command protocol
• Six-sided mu-metal–enhanced shielding minimizes EMI emission and susceptibility—validated per CISPR 11 Class B limits
• Convection-cooled design eliminates fan noise and mechanical failure points; validated for continuous operation at full load within specified thermal envelope
• OEM-optimized mechanical form factor with standardized DB15 I/O connector (carrying HV enable, monitor signals, status flags, and analog feedback)

Sample Compatibility & Compliance

The MRL100kV/200W is routinely deployed as the HV bias source in time-of-flight (TOF) and quadrupole mass spectrometers, where stable ion acceleration fields directly impact mass resolution and signal-to-noise ratio. It meets functional requirements for ASTM D149 (dielectric breakdown voltage of solid electrical insulating materials) and IEC 60270 (partial discharge measurement) test setups when configured with appropriate current limiting and monitoring. While not certified as a standalone medical device, its design adheres to essential principles of IEC 61010-1 (safety requirements for electrical equipment for measurement, control, and laboratory use), including reinforced insulation, creepage/clearance distances compliant with Pollution Degree 2, and double-insulated HV output path. For GLP/GMP-regulated laboratories, the module supports audit-ready operation when integrated with host software providing 21 CFR Part 11–compliant electronic records (e.g., timestamped setpoint logs, fault event capture, and user-access controls).

Software & Data Management

Digital control is implemented via open-protocol ASCII commands over USB or serial interfaces, enabling native integration with LabVIEW, Python (PySerial), MATLAB, and common SCADA platforms. The firmware supports real-time readback of actual voltage, current, temperature, and status bits (e.g., “Arc Detected”, “Interlock Open”) with 12-bit resolution. Optional Wisman-supplied SDK includes C/C++ libraries, .NET wrappers, and example scripts for automated calibration routines and compliance reporting. All analog monitor outputs (0–10 V scaling) are buffered and isolated to prevent ground loops—critical in multi-instrument rack configurations. Firmware updates are performed via bootloader mode without HV disassembly, ensuring minimal system downtime during maintenance cycles.

Applications

• Mass spectrometry: Ion source biasing, reflectron acceleration, and detector dynode chain powering
• Dielctric testing: Step-stress and ramp-rate withstand evaluation of polymers, ceramics, and composite laminates
• Electrostatic processes: Particle charging in aerosol science, electrostatic separation in material sorting, and corona discharge for surface modification
• Research instrumentation: Electron beam focusing in SEM/TEM auxiliary stages, photomultiplier tube (PMT) base supplies, and pulsed field electrophoresis drivers
• Industrial systems: Air ionization for static elimination in cleanrooms, ozone generation, and plasma ignition pre-biasing

FAQ

Is the MRL100kV/200W suitable for continuous-duty operation in a climate-controlled lab environment?
Yes—it is rated for indefinite operation at 200 W output within 0–50 °C ambient, provided adequate airflow (≥0.2 m/s) is maintained around the chassis per convection cooling specifications.
Can output polarity be reversed in-field without hardware modification?
No—polarity is fixed per unit configuration (positive or negative output). Reversal requires factory rework or selection of the complementary model variant at time of order.
Does the module support remote calibration traceability?
While the MRL itself does not include NIST-traceable onboard calibration, its analog monitor outputs and digital registers are linear and stable enough to serve as primary references in system-level calibration procedures compliant with ISO/IEC 17025.
What safety certifications does the MRL series hold?
The module complies with IEC 61010-1 Edition 3 for measurement/control equipment. CE marking applies to the base platform; full regulatory certification (e.g., UL, CSA) is achievable via customer-specific system-level evaluation.
Is custom voltage or form factor development available?
Yes—Wisman offers full OEM engineering support, including mechanical redesign, voltage customization (including 100 kV variants), and interface firmware adaptation under NDA.